fix svc event handling

Author: Hau-Hau

.github/workflows/service__event_dispatcher__pull_request__closed__main.yml

@@ -9,4 +9,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Emit metadata
-        run: echo "Running for PR ${{ github.event.number }} state=${{ github.event.action }}"
+        run: |
+          echo "Running for PR ${{ github.event.number }}"
+          echo "State: ${{ github.event.pull_request.state }}"
+          echo "Base ref: ${{ github.event.pull_request.base.ref }}"
+          echo "Merged: ${{ github.event.pull_request.merged }}"

.github/workflows/update-nuspec.yml

@@ -13,20 +13,63 @@ concurrency:
 jobs:
   validate:
     runs-on: ubuntu-latest
-    if: >
-      github.event.workflow_run.event == 'pull_request' &&
-      github.event.workflow_run.conclusion == 'success' &&
-      fromJson(github.event.workflow_run.payload).pull_request.state == 'closed' &&
-      fromJson(github.event.workflow_run.payload).pull_request.base.ref == 'main'
-    env:
-      PULL_REQUEST_MERGED: ${{ github.event.pull_request.merged }}
+    if: github.event.workflow_run.conclusion == 'success'
     outputs:
       result: ${{ steps.validate.outputs.result }}
+      pull_request_merged: ${{ steps.initialize.outputs.pr_merged }}
+      pull_request_head_ref: ${{ steps.initialize.outputs.pr_head_ref }}
     steps:
       - uses: actions/checkout@v4
 
+      - name: Initialize
+        id: initialize
+        env:
+          GH_TOKEN: ${{ secrets.PAT }}
+          WORKFLOW_EVENT: ${{ github.event.workflow_run.event }}
+        run: |
+          if [[ "${{ github.event_name }}" == "workflow_dispatch" ]]; then
+            echo "[skip] workflow_dispatch"
+            exit 0
+          fi
+
+          if [ "$WORKFLOW_EVENT" != "pull_request" ]; then
+            echo "[skip] Not a pull_request event"
+            echo "pull_request_merged=false" >> $GITHUB_OUTPUT
+            echo "pull_request_head_ref=" >> $GITHUB_OUTPUT
+            exit 0
+          fi
+          
+          PR_NUMBER=$(echo '${{ toJson(github.event.workflow_run.pull_requests) }}' | jq -r '.[0].number // empty')
+          if [ -z "$PR_NUMBER" ]; then
+            echo "[skip] No PR number found"
+            echo "pull_request_merged=false" >> $GITHUB_OUTPUT
+            echo "pull_request_head_ref=" >> $GITHUB_OUTPUT
+            exit 0
+          fi
+          
+          # Fetch PR details
+          PR_JSON=$(gh pr view "$PR_NUMBER" --repo ${{ github.repository }} --json merged,headRefName,baseRefName,state)
+          
+          PR_MERGED=$(echo "$PR_JSON" | jq -r '.merged')
+          PR_STATE=$(echo "$PR_JSON" | jq -r '.state')
+          
+          # Validate PR is closed and targeting main
+          if [ "$PR_STATE" != "CLOSED" ] || [ "$PR_BASE" != "main" ]; then
+            echo "[skip] PR not valid: state=$PR_STATE base=$PR_BASE"
+            exit 0
+          fi
+          
+          PR_HEAD_REF=$(echo "$PR_JSON" | jq -r '.headRefName')
+          PR_BASE=$(echo "$PR_JSON" | jq -r '.baseRefName')
+
+          echo "pull_request_merged=$PR_MERGED" >> $GITHUB_OUTPUT
+          echo "pull_request_head_ref=$PR_HEAD_REF" >> $GITHUB_OUTPUT
+
       - name: Validate
         id: validate
+        env:
+          PULL_REQUEST_MERGED: ${{ steps.initialize.outputs.pull_request_merged }}
+          GITHUB_HEAD_REF: ${{ steps.initialize.outputs.pull_request_head_ref }}
         run: |
           if [[ "${{ github.event_name }}" == "workflow_dispatch" ]]; then
             echo "result=true" >> $GITHUB_OUTPUT